Today I have been looking for a command to compare two files simultaneously (the colour schemes of KDE) and used diff. But that did not suit my requirement of viewing them simultaneously. There are editors like vi which provide simultaneous viewing of the files and I tried
$vimdiff file_1 file_2
To search for some specific command, we can use ‘man’ and the pattern
$man -k diff
and it showed many commands like zdiff,vimdif,..
The advantage of this is that it searches for the pattern and a one line abstract of these commands (available in man pages) for the corresponding pattern
But the major disadvantage is that if you have some commands in your system which does not have a man page, it returns “nothing appropriate”
Here is a simple shell script which searches for command-pattern in the directories in the PATH variable
Just make a change in the PATH_DIR_COUNT depending on the number of directories in it.
(use echo $PATH to find this out)
#!/bin/sh # A simple Command to search for a pattern in the commands available in the directories mentioned in PATH environment varible # Usage: cmd_search pattern PATH_DIR_COUNT=6 #Number of Directories in the PATH environment variable if test $# -lt 1 then echo 'Usage: cmd_search pattern' exit fi for i in `seq 1 $PATH_DIR_COUNT` do ls `echo $PATH | cut -d ":" -f $i`|grep $1 done
To use the shell script, save it as cmd_search and
$chmod u+x cmd_search $ ./cmd_search command_pattern
bzdiff combinediff dehtmldiff diff diff3 diff-jars diffpp diffstat editdiff espdiff filterdiff fixcvsdiff flipdiff gendiff grepdiff hdifftopam interdiff lsdiff pamtohdiff pdiff rcsdiff recountdiff rediff sdiff sgmldiff splitdiff tiffdiff unwrapdiff vimdiff zdiff