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(bin/sh\255compatible shells is presented, as well as an introduction to)
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(alues of POSIX.2 system con\214guration v)-.25 F .58(ariables, retrie)-.25 F
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278.4 S .676(iltins, which must be implemented as part of the shell to pro).2 F
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330 R 3.473(si)-.55 G(nteracti)286.016 330 Q 1.273 -.15(ve b)-.25 H(eha).15 E
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417.6 Q .904(using the sh language.)72 429.6 R .904(There e)5.904 F .904
(xist multiple incompatible implementations of the)-.15 F F1(test)3.403 E F0
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(\214les for type and other attrib)72 441.6 R .281
(utes and performs arithmetic and string comparisons.)-.2 F .281
(POSIX considered none)5.281 F .868(of these correct, so the standard beha)72
453.6 R .868(vior w)-.2 F .868(as speci\214ed in terms of the number of ar)-.1
F .867(guments to the com-)-.18 F 3.803(mand. POSIX.2)72 465.6 R 1.303
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(wer ar)-.25 F 1.303(guments are gi)-.18 F -.15(ve)-.25 G 3.803(nt).15 G(o)
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(een omitted as being `).15 F(`be)-.74 E .28(yond its scope.)-.15 F 4.26 -.74
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541.2 Q F2(.pr)2.5 E(o\214le)-.45 E F0(.)1.666 E F1 2.5(4. Shell)72 565.2 R
(Comparison)2.5 E F0 .693(This section compares features of bash, sh, and ksh \
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72 616.8 R .366(\214rst three sections pro)2.866 F .366(vide a progressi)-.15 F
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(All three shells ha)97 668.4 R .321 -.15(ve t)-.2 H .021
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(hm)105.012 680.4 S 1.027
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(4.2.1. V)72 135.6 R(ariables and V)-.92 E(ariable Expansion)-.92 E F0 .097
(Bash and ksh ha)97 151.2 R .396 -.15(ve a)-.2 H .096(ugmented v).15 F .096
(ariable e)-.25 F 2.596(xpansion. Arithmetic)-.15 F .096(substitution allo)
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(mand line editing standardized by POSIX.2.)72 207.6 Q 1.69
(Readline is fully customizable.)97 223.2 R 1.691
(In addition to the basic commands and k)6.69 F 1.991 -.15(ey b)-.1 H 1.691
(indings, the library).15 F(allo)72 235.2 Q .83
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(indings using a startup \214le.).15 F(The)5.83 E F2(inputr)3.329 E(c)-.37 E F0
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(~/.inputr)4.287 E(c)-.37 E F0 4.287(,i)1.666 G 4.287(sr)137.43 247.2 S 1.788(\
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(Readline includes an e)5.546 F .546(xtensible interf)-.15 F .546
(ace, so each program using the library can)-.1 F .23(add its o)72 271.2 R .23
(wn bindable commands and program-speci\214c k)-.25 F .531 -.15(ey b)-.1 H
2.731(indings. Bash).15 F .231(uses this f)2.731 F .231
(acility to add bindings)-.1 F(that perform history e)72 283.2 Q
(xpansion or shell w)-.15 E(ord e)-.1 E(xpansions on the current input line.)
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(whether or not eight-bit characters are directly read as input or con)72 310.8
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(ey s)-.1 H .158(equences \(a).15 F(meta-pre\214x)72 322.8 Q 1.575(ed k)-.15 F
1.875 -.15(ey s)-.1 H 1.575
(equence consists of the character with the eighth bit zeroed, preceded by the)
.15 F F2(meta-)4.074 E(pr)72 334.8 Q(e\214x)-.37 E F0(character)4.45 E 2.784
(,u)-.4 G .284(sually escape, which selects an alternate k)145.374 334.8 R -.15
(ey)-.1 G .285(map\), to decide whether to output characters).15 F .485
(with the eighth bit set directly or as a meta-pre\214x)72 346.8 R .485(ed k)
-.15 F .784 -.15(ey s)-.1 H .484(equence, whether or not to wrap to a ne).15 F
2.984(ws)-.25 G(creen)482.35 346.8 Q .157
(line when a line being edited is longer than the screen width, the k)72 358.8
R -.15(ey)-.1 G .158(map to which subsequent k).15 F .458 -.15(ey b)-.1 H
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370.8 S -.15(ve)144.353 370.8 S 3.031(nw).15 G .531
(hat happens when readline w)168.894 370.8 R .531(ants to ring the terminal')
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(ariables)-.25 E(can be set in the inputrc \214le.)72 382.8 Q .284
(The startup \214le understands a set of C preprocessor)97 398.4 R(-lik)-.2 E
2.785(ec)-.1 G .285(onditional constructs which allo)329.49 398.4 R 2.785(wv)
-.25 G(ariables)472.9 398.4 Q .12(or k)72 410.4 R .42 -.15(ey b)-.1 H .119(ind\
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(Users can add program-speci\214c bindings to mak)5.317 F 2.817(et)-.1 G .317
(heir li)352.808 422.4 R -.15(ve)-.25 G 2.817(se).15 G 2.817(asier: here)
396.922 422.4 R .317(are bindings to)2.817 F(edit the v)72 434.4 Q(alue of)-.25
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(vious w)-.25 E(ord:)-.1 E/F3 10/Courier@0 SF 6(#M)97 452.4 S
(acros that are convenient for shell interaction)115 452.4 Q($if Bash)97 464.4
Q 6(#e)97 476.4 S(dit the path)115 476.4 Q
("\\C-xp": "PATH=${PATH}\\e\\C-e\\C-a\\ef\\C-f")97 488.4 Q 6(#p)97 500.4 S
(repare to type a quoted word -- insert open and close double quotes)115 500.4
Q 6(#a)97 512.4 S(nd move to just after the open quote)115 512.4 Q
("\\C-x\\"": "\\"\\"\\C-b")97 524.4 Q 6(#Q)97 536.4 S
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(of k)72 657.6 R 1.01 -.15(ey b)-.1 H .71
(indings directly from a \214le and passes them to readline.).15 F .71
(In its most common usage,)5.71 F F1(bind)3.21 E F0(tak)3.21 E .71(es a)-.1 F
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(Both k)5 E .3 -.15(ey b)-.1 H(indings and v).15 E
(ariable assignments can appear in the string gi)-.25 E -.15(ve)-.25 G 2.5(nt)
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(dc)-.37 G(ompletion)328.546 697.2 Q F0 5.402(.W)C .402(hen the)385.888 697.2 R
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(AB\) is typed, readline looks at the w)-.93 F 1.26
(ord currently being entered and computes the set of \214le-)-.1 F .523
(names of which the current w)72 721.2 R .523(ord is a v)-.1 F .523
(alid pre\214x.)-.25 F .524
(If there is only one possible completion, the rest of the)5.523 F EP
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(characters are inserted directly)72 84 R 2.858(,o)-.65 G .358(therwise the co\
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-.1(wo)72 96 S 3.199(rd. A).1 F .699(second T)3.199 F .699(AB character entere\
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1.814(the possible completions; there is an option to ha)72 108 R 2.113 -.15
(ve t)-.2 H 1.813(he list displayed immediately).15 F 6.813(.R)-.65 G 1.813
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(hooks so that applications can pro)72 120 R .482
(vide speci\214c types of completion before the def)-.15 F .483
(ault \214lename completion)-.1 F .132(is attempted.)72 132 R .132
(This is quite \215e)5.132 F .132(xible, though it is not completely user)-.15
F 2.632(-programmable. Bash,)-.2 F .132(for e)2.632 F .132(xample, can)-.15 F
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F -.15(exe)72 156 S .424(cutables found in the \214le system\), shell v).15 F
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(It uses a set of heuristics)5.424 F(that, while not perfect, is generally qui\
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399.236 207.6 S(ro)410.882 207.6 Q .256(vided jointly by bash)-.15 F .095
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2.825 E F0 -.2(bu)2.825 G .325(iltins to manipulate the history list.).2 F .325
(The v)5.325 F .325(alue of)-.25 F F1(HISTFILE)2.825 E F0 .326
(specifes the \214le where bash)2.826 F .128(writes the command history on e)72
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351.6 R 2.53(,i)-.65 G .03(mplements a f)350.636 351.6 R .031
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(ery similar to csh \(`)-.15 F .593(`bang history')-.74 F .593
(', so called because)-.74 F(the e)72 375.6 Q
(xclamation point introduces a history substitution\):)-.15 E/F3 10/Courier@0
SF 6($e)97 393.6 S(cho a b c d e)115 393.6 Q 6(abcde)97 405.6 S 6($!)97 417.6 S
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($!)97 453.6 S(-2)115 453.6 Q(echo a b c d e)97 465.6 Q 6(abcde)97 477.6 S 6
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<8c78>-.25 E 1.893(\(pathname e)72 111.6 R 1.893
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1.107(race e)207.655 135.6 R 1.107(xpression consists of an optional)-.15 F F2
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(braces enclosing a series of comma-separated strings, and an optional)72 147.6
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(cho a{d,c,b}e)115 177.6 Q(ade ace abe)97 189.6 Q F1 2.5(4.3.7. Pr)72 219.6 R
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(vides is the ability to customize the prompt.)-.15 F(Both)72 247.2 Q F1(PS1)
3.305 E F0(and)3.305 E F1(PS2,)3.305 E F0 .805
(the primary and secondary prompts, are e)3.305 F .805
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(and v)72 259.2 R .324(ariable e)-.25 F .324
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454.217 259.2 R(ariable)-.25 E .728(can be put into the prompt \(e.g.,)72 271.2
R F1($SHL)3.228 E(VL)-.92 E F0 3.228(,w)C .728(hich indicates ho)258.564 271.2
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(specially interprets characters in the prompt string preceded by a backslash.)
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295.2 R .781(command number or history number of the command being entered.)72
307.2 R .78(There is e)5.781 F -.15(ve)-.25 G 3.28(nab).15 G .78
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(xample, this assignment causes the current user)311.964 343.2 R(,)-.4 E .99
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R(and the history number of the current command to be embedded into the primar\
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(S1='\\u@\\h [\\t] \\W\($SHLVL:\\!\)\\$ ')115 385.2 Q
(chet@odin [21:03:44] documentation\(2:636\)$ cd ..)97 397.2 Q
(chet@odin [21:03:54] src\(2:637\)$)97 409.2 Q F0 .619
(The string being assigned is surrounded by single quotes so that if it is e)72
430.8 R(xported,)-.15 E F1(SHL)3.119 E(VL)-.92 E F0 .619(will be updated)3.119
F(by a child shell:)72 442.8 Q F3
(chet@odin [21:13:35] src\(2:638\)$ export PS1)97 460.8 Q
(chet@odin [21:17:40] src\(2:639\)$ bash)97 472.8 Q
(chet@odin [21:17:46] src\(3:696\)$)97 484.8 Q F0(The)72 506.4 Q F1(\\$)2.5 E
F0(escape is displayed as `)2.5 E(`)-.74 E F1($)A F0 1.48 -.74('' w)D
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E F1(#)A F0 1.48 -.74('' w)D(hen running as root.).74 E F1 2.5(4.3.8. POSIX)72
530.4 R(Mode)2.5 E F0 .46(Although bash is intended to be POSIX.2 compliant, t\
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1.168(not compatible with the standard.)72 558 R -.15(Fo)6.169 G 3.669(ru).15 G
1.169(sers who wish to operate in a strict POSIX.2 en)238.85 558 R 1.169
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5.61(.W)C .61(hen this mode is acti)199.42 570 R -.15(ve)-.25 G 3.109(,b).15 G
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F(fers)-.25 E .066(from POSIX.2 to match the standard.)72 582 R .067
(POSIX mode is entered when bash is started with the)5.066 F F1 .067(-o posix)
2.567 F F0(option)2.567 E .382(or when)72 594 R F1 .382(set -o posix)2.882 F F0
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(are that attempts to be POSIX.2)-.1 F 5.752
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/Times-Bold@0 SF(shopt)3.187 E F0 -.2(bu)3.187 G(iltin.).2 E(Man)72 96 Q 3.714
(yo)-.15 G 3.714(ft)103.894 96 S 1.214(he v)113.718 96 R 1.214
(ariables which alter the shell')-.25 F 3.714(sb)-.55 G(eha)266.282 96 Q 1.214
(vior when set \(re)-.2 F -.05(ga)-.15 G 1.214(rdless of their v).05 F 1.215
(alue\) will be made)-.25 F 6(options settable with)72 108 R F2(shopt)8.5 E F0
11(.E)C 6(xamples of such v)218.23 108 R 6(ariables include)-.25 F F2(allo)8.5
E(w_null_glob_expansion)-.1 E F0(,)A F2(glob_dot_\214lenames)72 120 Q F0 2.5
(,a)C(nd)163.67 120 Q F2(MAIL_W)2.5 E(ARNING)-1.2 E F0(.)A F2 2.5(5.4. V)72 144
R(ariables and V)-.92 E(ariable Expansion)-.92 E F0 .047
(Bash-2.0 will implement se)97 159.6 R -.15(ve)-.25 G .048(ral ne).15 F 2.548
(wv)-.25 G .048(ariable e)252.988 159.6 R 2.548(xpansions. These)-.15 F .048
(will answer se)2.548 F -.15(ve)-.25 G .048(ral of the most per).15 F(-)-.2 E
.213(sistant requests for ne)72 171.6 R 2.713(wf)-.25 G 2.713(eatures. It)
172.582 171.6 R .213(will be possible to `)2.713 F .212(`indirectly reference')
-.74 F 2.712('av)-.74 G .212(ariable with an e)398.534 171.6 R(xpansion,)-.15 E
(lik)72 183.6 Q 3.01(eu)-.1 G(sing)94.91 183.6 Q/F3 10/Courier@0 SF .51
(eval \\$${name})3.01 F F0 .51(to reference a v)3.01 F .51(ariable named by)
-.25 F F3(${name})3.01 E F0 5.51(.E)C .51(xpansions will be a)394.32 183.6 R
-.25(va)-.2 G(ilable).25 E .462(to retrie)72 195.6 R .762 -.15(ve s)-.25 H .462
(ubstrings of v).15 F .461(ariables in an)-.25 F F1(awk)2.961 E F0(-lik)A 2.961
(em)-.1 G .461(anner: starting at a speci\214c inde)277.692 195.6 R .461
(x, retrie)-.15 F .461(ving some num-)-.25 F .941
(ber of characters or the rest of the string.)72 207.6 R .941
(It will be possible to retrie)5.941 F 1.241 -.15(ve s)-.25 H .941
(equences of array elements lik).15 F(e)-.1 E .354(this, too.)72 219.6 R .354
(It w)5.354 F .354(ould be nice to ha)-.1 F .654 -.15(ve a w)-.2 H .354
(ay to replace portions of a v).05 F .353
(ariable matching a pattern the same w)-.25 F(ay)-.1 E(leading or trailing sub\
strings are presently stripped; that capability may be a)72 231.6 Q -.25(va)-.2
G(ilable.).25 E .453(Another ne)97 247.2 R 2.953(we)-.25 G .453
(xpansion will pro)156.376 247.2 R .453(vide a w)-.15 F .454
(ay to create strings containing arbitrary characters, which is)-.1 F(incon)72
259.2 Q -.15(ve)-.4 G 1.636(nient in the current v).15 F 4.136(ersion. W)-.15 F
1.635(ords of the form $')-.8 F F1(string)A F0 4.135('w)C 1.635(ill e)355.145
259.2 R 1.635(xpand to)-.15 F F1(string)4.135 E F0 1.635(with backslash-)4.135
F 1.231(escaped characters in)72 271.2 R F1(string)3.731 E F0 1.231
(replaced as speci\214ed by the ANSI C standard.)3.731 F 1.232
(As with other single-quoted)6.232 F
(shell strings, the only character that may not appear in)72 283.2 Q F1(string)
2.5 E F0(is a single quote.)2.5 E 1.436(The shell v)97 298.8 R 1.436
(ariables will change also.)-.25 F 3.936(An)6.436 G 1.936 -.25(ew va)272.052
298.8 T(riable).25 E F2(HISTIGNORE)3.936 E F0 1.435(will supersede)3.936 F F2
(HISTCON-)3.935 E(TR)72 310.8 Q(OL)-.3 E F0(.)A F2(HISTIGNORE)5.327 E F0 .327
(is the history analogy of)2.827 F F2(FIGNORE)2.828 E F0 2.828(:ac)C .328
(olon-separated list of patterns specifying)339.938 310.8 R 1.082
(commands to omit from the history list.)72 322.8 R 1.081
(The special pattern '&' will match the pre)6.081 F 1.081
(vious history line, to)-.25 F(pro)72 334.8 Q 1.568(vide the)-.15 F F2
(HISTCONTR)4.068 E(OL)-.3 E F1(ignor)4.068 E(edups)-.37 E F0(beha)5.734 E(vior)
-.2 E 6.568(.M)-.55 G(an)303.546 334.8 Q 4.069(yv)-.15 G 1.569
(ariables which modify the shell')326.655 334.8 R 4.069(sb)-.55 G(eha)474.21
334.8 Q(vior)-.2 E .395(will lose their special meaning.)72 346.8 R -1.11(Va)
5.395 G .395(riables such as)1.11 F F2(notify)2.895 E F0(and)2.895 E F2(noclob)
2.895 E(ber)-.1 E F0 .395(which pro)2.895 F .395(vide functionality a)-.15 F
-.25(va)-.2 G(il-).25 E .931
(able via other mechanisms will no longer be treated specially)72 358.8 R 5.931
(.O)-.65 G .931(ther v)340.06 358.8 R .932(ariables will be folded into)-.25 F
F2(shopt)3.432 E F0(.)A(The)72 370.8 Q F2(history_contr)5.519 E(ol)-.18 E F0
(and)5.519 E F2(hostname_completion_\214le)5.519 E F0 -.25(va)5.519 G 3.019
(riables, superseded by).25 F F2(HISTCONTR)5.518 E(OL)-.3 E F0(and)5.518 E F2
(HOSTFILE)72 382.8 Q F0(respecti)2.5 E -.15(ve)-.25 G(ly).15 E 2.5(,w)-.65 G
(ill be remo)185.12 382.8 Q -.15(ve)-.15 G(d.).15 E F2 2.5(5.5. Readline)72
406.8 R F0(Naturally)97 422.4 Q 2.94(,t)-.65 G .44(here will be impro)142.34
422.4 R -.15(ve)-.15 G .441(ments to readline as well.).15 F .441
(All of the POSIX.2)5.441 F F1(vi)2.941 E F0 .441(-mode editing com-)B .33
(mands will be implemented; missing commands lik)72 434.4 R 2.829(e`)-.1 G .329
(m' to sa)290.599 434.4 R .629 -.15(ve t)-.2 H .329
(he current cursor position \().15 F F1(mark)A F0 2.829(\)a)C .329(nd the)
478.951 434.4 R .36(`@' command for macro e)72 446.4 R .36(xpansion will be a)
-.15 F -.25(va)-.2 G 2.861(ilable. The).25 F .361
(ability to set the mark and e)2.861 F .361(xchange the current)-.15 F .764
(cursor position \()72 458.4 R F1(point)A F0 3.264(\)a)C .764
(nd mark will be added to the readline emacs mode as well.)170.672 458.4 R .763
(Since there are com-)5.764 F .196
(mands to set the mark, commands to manipulate the re)72 470.4 R .197
(gion \(the characters between the point and the mark\))-.15 F .111(will be a)
72 482.4 R -.25(va)-.2 G 2.611(ilable. Commands).25 F(ha)2.611 E .411 -.15
(ve b)-.2 H .11
(een added to the readline emacs mode for more complete ksh compati-).15 F
(bility)72 494.4 Q 2.5(,s)-.65 G(uch as the C-])101.36 494.4 Q F1(c)A F0
(character search command.)2.5 E F2 2.5(5.6. Con\214guration)72 518.4 R F0 .318
(Bash w)97 534 R .318
(as the \214rst GNU program to completely autocon\214gure.)-.1 F .319
(Its autocon\214guration mechanism pre-)5.319 F(dates)72 546 Q F1(autoconf)4.07
E F0 4.07(,t)C 1.569
(he current GNU con\214guration program, and needs updating.)140.97 546 R 1.569
(Bash-2.0 may include an)6.569 F .603
(autoconf-based con\214guration script, if necessary ne)72 558 R 3.103(wf)-.25
G .603(unctionality can be added to autoconf, or its limita-)294.476 558 R
(tions bypassed.)72 570 Q F2 2.5(5.7. Miscellaneous)72 594 R F0 1.632
(The POSIX mode will be impro)97 609.6 R -.15(ve)-.15 G 4.131(di).15 G 4.131
(nb)254.26 609.6 S 1.631(ash-2.0; it will pro)268.391 609.6 R 1.631
(vide a more complete superset of the)-.15 F(POSIX standard.)72 621.6 Q -.15
(Fo)5 G 2.5(rt).15 G(he \214rst time, bash will recognize the e)163.79 621.6 Q
(xistance of the POSIX.2)-.15 E F1(special)2.5 E F0 -.2(bu)2.5 G(iltins.).2 E
2.627(An)97 637.2 S .627 -.25(ew t)111.847 637.2 T .127(rap v).25 F(alue,)-.25
E F2(DEB)2.627 E(UG)-.1 E F0 2.627(,w)C .128(ill be present, as in ksh.)218.405
637.2 R .128(Commands speci\214ed with a)5.128 F F2(DEB)2.628 E(UG)-.1 E F0
.128(trap will)2.628 F 1.908(be e)72 649.2 R -.15(xe)-.15 G 1.908
(cuted after e).15 F -.15(ve)-.25 G 1.908(ry simple command.).15 F 1.908
(Since this mak)6.908 F 1.908(es shell script deb)-.1 F 1.908
(uggers possible, I hope to)-.2 F(include a bash deb)72 661.2 Q
(ugger in the bash-2.0 release.)-.2 E F2 2.5(6. A)72 685.2 R -.1(va)-1 G
(ilability).1 E F0 5.997(The current v)97 700.8 R 5.997(ersion of bash is a)
-.15 F -.25(va)-.2 G 5.998(ilable for anon).25 F 5.998
(ymous FTP from prep.ai.mit.edu as)-.15 F F1(/pub/gnu/bash-1.14.2.tar)72 712.8
Q(.gz)-1.11 E F0(.)1.666 E EP
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/F0 10/Times-Roman@0 SF 2.5(-1)277.17 48 S 2.5(3-)288 48 S/F1 10/Times-Bold@0
SF 2.5(7. Conclusion)72 84 R F0 .755(This paper has presented an o)97 99.6 R
-.15(ve)-.15 G(rvie).15 E 3.255(wo)-.25 G 3.255(fb)259.27 99.6 S .755
(ash, compared its features with those of other shells, and)270.855 99.6 R
(hinted at features in the ne)72 111.6 Q(xt release, bash-2.0.)-.15 E .483
(Bash is a solid replacement for sh.)97 127.2 R .483(It is suf)5.483 F .483
(\214ciently portable to run on nearly e)-.25 F -.15(ve)-.25 G .484(ry v).15 F
.484(ersion of)-.15 F/F2 9/Times-Roman@0 SF(UNIX)2.984 E F0 .514
(from 4.3 BSD to SVR4.2, and se)72 139.2 R -.15(ve)-.25 G(ral).15 E F2(UNIX)
3.013 E F0 -.1(wo)3.013 G(rkalik).1 E .513(es, and rob)-.1 F .513
(ust enough to replace sh on most of those)-.2 F .771(systems, It is v)72 151.2
R .771(ery close to POSIX.2-conformant in POSIX mode, and is getting f)-.15 F
(aster)-.1 E 5.771(.I)-.55 G 3.272(ti)436.684 151.2 S 3.272(sn)445.516 151.2 S
.772(ot, unfortu-)457.678 151.2 R(nately)72 163.2 Q 2.663(,g)-.65 G .163
(etting smaller)105.953 163.2 R 2.663(,b)-.4 G .163(ut there are man)170.399
163.2 R 2.663(yo)-.15 G .163(ptional features.)248.101 163.2 R .163(It is v)
5.163 F .162(ery easy to b)-.15 F .162(uild a small subset to use as)-.2 F 2.5
(ad)72 175.2 S(irect replacement for /bin/sh.)83.94 175.2 Q .909
(Bash has thousands of users w)97 190.8 R .909(orldwide, all of whom ha)-.1 F
1.209 -.15(ve h)-.2 H .91(elped to mak).15 F 3.41(ei)-.1 G 3.41(tb)409.34 190.8
S(etter)420.53 190.8 Q 5.91(.A)-.55 G .91(nother testa-)453.38 190.8 R
(ment to the bene\214ts of free softw)72 202.8 Q(are.)-.1 E F1 2.5(8. Refer)72
226.8 R(ences)-.18 E F0 .432([1] S. R. Bourne, `)72 242.4 R .432(`UNIX T)-.74 F
.432(ime-Sharing System:)-.35 F .431(The UNIX Shell')5.431 F(',)-.74 E/F3 10
/Times-Italic@0 SF .431(Bell System T)2.931 F(ec)-.92 E .431(hnical J)-.15 F
(ournal)-.25 E F0 2.931(,5)C(7\(6\),)484.84 242.4 Q
(July-August, 1978, pp. 1971-1990.)72 254.4 Q .736([2] Morris Bolsk)72 270 R
3.237(ya)-.15 G .737(nd Da)153.22 270 R .737(vid K)-.2 F(orn,)-.35 E F3 .737
(The K)3.237 F .737(ornShell Command and Pr)-.4 F -.1(og)-.45 G -.15(ra).1 G
.737(mming Langua).15 F -.1(ge)-.1 G F0 3.237(,P).1 G .737(rentice Hall,)
453.833 270 R(1989.)72 282 Q .142([3] Bill Jo)72 297.6 R 1.442 -.65(y, A)-.1 H
2.642(nI).65 G .141(ntroduction to the C Shell,)140.428 297.6 R F3 .141
(UNIX User')2.641 F 2.641(sS)-.4 G .141(upplementary Documents)309.346 297.6 R
F0 2.641(,U)C(ni)424.328 297.6 Q -.15(ve)-.25 G .141(rsity of Califor).15 F(-)
-.2 E(nia at Berk)72 309.6 Q(ele)-.1 E 1.3 -.65(y, 1)-.15 H(986.).65 E .283
([4] IEEE,)72 325.2 R F3 .283(IEEE Standar)2.783 F 2.783(df)-.37 G .283
(or Information T)179.692 325.2 R(ec)-.92 E(hnolo)-.15 E .283(gy -- P)-.1 F
.283(ortable Oper)-.8 F .283(ating System Interface \(POSIX\) P)-.15 F(art)-.8
E(2: Shell and Utilities)72 337.2 Q F0 2.5(,1)C(992.)165.06 337.2 Q F1 2.5
(9. A)72 361.2 R(uthor Inf)-.5 E(ormation)-.25 E F0 .937(Chet Rame)97 376.8 R
3.437(yi)-.15 G 3.437(sas)153.724 376.8 S(oftw)172.818 376.8 Q .936
(are engineer w)-.1 F .936(orking at Case W)-.1 F .936(estern Reserv)-.8 F
3.436(eU)-.15 G(ni)393.43 376.8 Q -.15(ve)-.25 G(rsity).15 E 5.936(.H)-.65 G
3.436(eh)443.036 376.8 S .936(as a B.S. in)455.912 376.8 R .072
(Computer Engineering and an M.S. in Computer Science, both from CWR)72 388.8 R
2.573(U. He)-.4 F .073(has been w)2.573 F .073(orking on bash)-.1 F
(for six years, and the primary maintainer for one.)72 400.8 Q EP
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