/[cvs]/nfo/bash/ff
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Contents of /nfo/bash/ff

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Revision 1.3 - (show annotations)
Sun Nov 7 02:02:01 2004 UTC (19 years, 4 months ago) by joko
Branch: MAIN
CVS Tags: HEAD
Changes since 1.2: +3 -1 lines
+ added help text for option -i

1 #!/bin/sh
2 #---------------------------------------------------------------------
3 N='ff'
4 C='rabit@netfrag.org, 08.10.2004'
5 F="$N - Follow file"
6 I='$Id: ff,v 1.2 2004/11/07 01:58:30 joko Exp $'
7 #---------------------------------------------------------------------
8
9 # If unset, set the per-user file list to a good default:
10 [ -z "$FFFILES" ] && FFFILES=$HOME'/.ff_files'
11
12 E='echo -e'
13 YW="\033[1;33m"
14 GY="\033[0;37m"
15 B1="\033[1m"
16 B0="\033[0m"
17
18 function CheckFileList {
19 if [ -e "$FFFILES" ]; then
20 FileListExists=1
21 else
22 $E " Error: '"$B1$FFFILES$B0"' does not exist yet. First add a file."
23 $E " Try '$B1$N --help$B0' for information on usage."
24 $E 'Aborting.'
25 fi
26 return
27 }
28 function CountFiles {
29 FileCount=`cat $FFFILES | wc -w`
30 return
31 }
32
33 $E "$YW$F$GY ($C)\n($I)"
34 p1=$1
35 case "$p1" in
36 (-a)
37 if [ -e $2 ]; then
38 $E "- Adding file '"$B1$2$B0"'..."
39 echo $2 >> $FFFILES
40 CountFiles
41 $E " File index is '"$B1$FileCount$B0"'"
42 $E 'Done.'
43 else
44 $E " Error: '"$B1$2$B0"' does not exist."
45 $E 'Aborting.'
46 fi
47 exit
48 ;;
49 (-h|--help)
50 # Just overrun this casing and show help.
51 ;;
52 (-l)
53 CheckFileList; [ -z $FileListExists ] && exit
54 $E "- Listing files in '"$B1$FFFILES$B0"'..."
55 while read FileName; do
56 ((Index++))
57 $E ' '$B1$Index$B0": '"$B1$FileName$B0"'"
58 done < $FFFILES
59 $E 'Done.'
60 exit
61 ;;
62 (-i)
63 iselect=`which iselect`
64 if [ -z $iselect ]; then
65 echo "ERROR: iselect is not installed"
66 exit
67 fi
68 sel=`cat $FFFILES | $iselect -a -c -n "Select file to tail"`
69 if [ ! -z $sel ]; then
70 tail -f $sel
71 fi
72 exit
73 ;;
74 (?*)
75 CheckFileList; [ -z $FileListExists ] && exit
76 CountFiles
77 if ((p1>0)) && ((p1<=FileCount)); then
78 FileName=`head -n $p1 $FFFILES | tail -n 1`
79 $E "- Following '"$B1$FileName$B0"' (press CTRL-C to stop)..."
80 echo
81 tail -f $FileName
82 else
83 $E ' Error: '$B1'<number>'$B0' must be in the range of 1 - '$FileCount'.'
84 $E 'Aborting.'
85 fi
86 exit
87 ;;
88 esac
89
90 $E $B1'Usage:'$B0
91 $E " $B1$N -l$B0"
92 $E " List all files from '"$B1$FFFILES$B0"' with indices."
93 $E ' '$B1$N' <number>'$B0
94 $E ' Tail and follow the file with index '$B1'<number>'$B0'.'
95 $E ' '$B1$N' -a <filename>'$B0
96 $E " Add a file to '"$B1$FFFILES$B0"'. "$B1'<filename>'$B0' must exist.'
97 $E " $B1$N -i$B0"
98 $E " Interactively choose from list of files in '"$B1$FFFILES$B0"'."
99 $E ' '$B1$N' [-h|--help]'$B0
100 $E ' Get this brief help.'
101 $E "The variable '${B1}FFFILES$B0' set overrides the file list default file name."
102 $E "(for example: '${B1}export FFFILES=\$HOME/fff.txt$B0'.)"
103 # EOF

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