Bash shell

1. Bash Brace Expansion
# touch test{1,3,5,7,9,11}
# ls test{1,3,5,7,9,11}
=> test1  test11  test3  test5  test7  test9

# ls test{1,7}
=> test1  test7

# ls test{1..7}
=> test1  test3  test5  test7

# ls test{1..11..4}  // 1부터 11까지 4씩 증감
test1  test5  test9

# echo /dev/sd{a..z}
=> /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr /dev/sds /dev/sdt /dev/sdu /dev/sdv /dev/sdw /dev/sdx /dev/sdy /dev/sdz

# echo /dev/sd{z..x}
/dev/sdz /dev/sdy /dev/sdx

2. 문자열 치환
# sed -i 's/SET_IPOIB_CM=auto/SET_IPOIB_CM=no/g' /etc/infiniband/openib.conf